Koj puas paub vim li cas qhov roughness yog 0.8, 1.6, 3.2, 6.3, 12.5?
Koj puas paub vim li cas lub tog raj kheej bores yog 63, 80, 100, 125?
Koj puas paub vim li cas lub tog raj kheej siab yog 6.3, 16, 25, 31.5?
Koj puas paub vim li cas cov xov specifications yog 6, 8, 10, 12, 14, 16?
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Koj puas paub li cas cov lus suav tsis txheeb hauv phau ntawv qhia kev tsim kho tshuab thiab cov lus tsis sib xws ntawm txhua cov khoom catalogs tuaj ntawm?
Txhua yam yog los ntawm tus lej tseem ceeb tshaj plaws.
Renault, tus kws tshaj lij Fab Kis, pom tias cov hlua khi ntawm cov cua kub cua muaj ntau yam tshwj xeeb, yog li nws xav txog txoj hauv kev los tsa 10 mus rau 5 lub zog kom tau txais tus lej 1.6, thiab tom qab ntawd muab ntau zaus kom tau 5 qhov tseem ceeb. cov lej raws li hauv qab no:
1.0
1.6
2.5
4.0
6.3
Qhov no yog geometric ib ntus, tus lej kawg yog 1.6 npaug ntawm thawj tus lej, tom qab ntawd tsuas muaj 5 hom steel hlau hlua hauv qab 10, thiab tsuas muaj 5 hom steel hlau hlua los ntawm 10 txog 100, uas yog 10, 16, 25, 40, 63 ib.
Txawm li cas los xij, txoj kev faib no yog qhov sib txawv heev, yog li Mr. Lei tau siv zog los txhawb nqa 10 mus rau 10 lub zog, thiab tau txais R10 qhov tseem ceeb ntawm tus lej raws li hauv qab no:
1.0
1.25
1.6
2.0
2.5
3.15
4.0
5.0
6.3
8.0
Qhov sib piv yog 1.25, yog li tsuas muaj 10 hom hlua hlau hauv 10, thiab tsuas yog 10 hom hlua hlua ntawm 10 txog 100, uas yog qhov tsim nyog dua. Lub sijhawm no, qee tus neeg yuav tsum hais tias cov lej nyob rau pem hauv ntej ntawm cov koob no zoo li muaj qhov sib txawv me me, xws li 1.0 thiab 1.25. Tsis muaj qhov sib txawv. Kuv feem ntau puag ncig, tab sis lub sijhawm nruab nrab ntawm 6.3 thiab 8.0 yog qhov loj. Qhov no puas tsim nyog?
Tsim nyog lossis tsis tsim nyog, cia peb ua qhov piv txwv. Piv txwv li, cov zauv 1, 2, 3, 4, 5, 6, 7, 8, thiab 9 zoo nkaus li zoo heev. Peb siv cov kab ke no los them cov nyiaj ua haujlwm. Peb muab Zhang San 1000 thiab Li Si 2000. Ob leeg ntseeg. Sudden inflation, 8000 rau Zhang San thiab 9000 rau Li Si. Yav dhau los, Li Si cov nyiaj hli yog ob npaug ntawm Zhang San, tab sis tam sim no nws tau dhau los ua 1.12 npaug. Koj puas xav tias Li Si tuaj yeem txaus siab? Nws yog tus saib xyuas, thiab nws yog tib yam xa nws 16,000. Zhang San yuav tsis yws tias tus saib xyuas muaj 8,000 ntau tshaj nws.
Muaj ob txoj hauv kev los piv cov khoom ntuj no, uas yog "kwv tij" thiab "tsis muaj tseeb"! Qhov tseem ceeb tus lej system yog txheeb ze.
Qee cov neeg hais tias nws cov khoom specifications yog 10 tons, 20 tons, 30 tons, thiab 40 tons. Tam sim no nws zoo li tsis tsim nyog, txoj cai? Yog tias koj noj ob npaug, nws yuav tsum yog 10 tons, 20 tons, 40 tons, 80 tons, lossis khaws lub taub hau thiab tus Tsov tus tw, nws yuav tsum yog 10 tons, 16 tons, 25 tons, 40 tons, qhov sib piv yog 1.6 yuav tsum. tsim nyog.
Qhov no yog "standardization". Kuv feem ntau pom cov neeg hais tias "standardization" ntawm cov rooj sab laj, tab sis lawv txhais tau tias "tus qauv". Cov haujlwm uas lawv ua tsuas yog txheeb xyuas cov qauv ntawm tag nrho lub tshuab, uas yog hu ua standardization. Qhov tseeb, nws tsis zoo li no. . Rau qhov tseeb standardization, koj yuav tsum tau serialize tag nrho cov tsis tau ntawm koj cov khoom raws li qhov tseem ceeb tus naj npawb system, thiab ces serialize lub functional tsis thiab qhov ntev ntawm tag nrho cov qhov chaw thiab Cheebtsam nrog rau qhov tseem ceeb naj npawb system.
Cov naj npawb ntuj tsis muaj qhov kawg, tab sis nyob rau hauv lub qhov muag ntawm cov neeg tsim khoom siv tshuab, tsuas muaj 10 tus lej hauv ntiaj teb, thiab nws yog tus naj npawb tseem ceeb R10. Tsis tas li ntawd, cov 10 tus lej no tau muab sib npaug, faib, squared, thiab square rooted, thiab cov txiaj ntsig tseem nyob hauv 10 tus lej no, zoo li cas! Thaum koj tab tom tsim thiab tsis paub qhov loj npaum li cas los xaiv, tsuas yog xaiv los ntawm 10 tus lej no, koj hais yooj yim npaum li cas!
1.0 N0
1.12 N2
1.25 N4
1.4 N6
1.6 N8
1.8 N10
2.0 N12
2.24 N14
2.5 N16
2.8 N18
3.15 N20
3.55 N22
4.0 N24
4.5 N26
5.0 N28
5.6 N30
6.3 N32
7.1 N34
8.0 N36
9.0 N38
Ob tus lej tseem ceeb, xws li 4 thiab 2, uas nws cov lej yog N24 thiab N12 raws li, muab faib rau lawv, ntxiv lawv cov lej, thiab qhov tshwm sim yog sib npaug rau N36, uas yog, 8;
Faib thiab rho tawm tus lej lej, uas yog sib npaug rau N12, uas yog, 2;
Rau lub voos xwmfab ntawm 2, muab nws tus lej N12 los ntawm 3 kom tau N36, uas yog 8;
Rau lub hauv paus ntawm 4, faib nws tus lej N24 los ntawm 2 kom tau N12, uas yog, yog tias 2 yog plaub lub zog ntawm 2? N12*4=N48, tsis nyob ntawm no, kuv yuav ua li cas? Hauv cov npe saum toj no, yog tias tsis muaj tus lej sau, nws yog 10, thiab nws tus lej xov tooj yog N40. Yog tias tus lej xov tooj ntau dua 40, tsuas yog saib qhov ntau dua 40. Piv txwv li, rau N48, saib N8, uas yog 1.6, thiab muab nws los ntawm 10 kom tau 16. Yog tias tus lej xov tooj yog N88, saib N8 kom tau 1.6, thiab muab nws los ntawm 100 kom tau 160, vim tias tus lej ntawm 100 yog N80, tus lej ntawm 1000 yog N120, thiab lwm yam.
Rau kev tsim kho tshuab, 20 tus lej no txaus rau lub neej. Tab sis qee zaum R40 tus lej system xav tau. Yog tias muaj 40 tus lej, nws yuav zoo meej dua. Yog tias nws tsis txaus, tseem muaj R80 series. Kuv tau nco txog tus lej R40 rov qab, thiab kuv tsis xav tau lub tshuab xam zauv rau kev suav dav dav.
Hais lus yooj yim, los xam lub peev xwm torsional ntawm 45 steel nrog txoj kab uas hla ntawm 4 0, torsion coefficient yog 0.5 * π * R^3, qhov torsional kev nyuaj siab raug xaiv los ua ib nrab ntawm qhov taw tes 360, uas yog 180MPa, thiab pi raug xaiv los ua 3.15. Tuaj tawm ib pliag. Puas muaj ib tug hais tias koj tsis ntxiv qhov kev nyab xeeb? Qhia rau kuv, nws puas yog 1.25, 1.5, lossis 2? hehe.
Ntu kub yog 0.618, uas yog 1.618, thiab tseem muaj 1.6 ntawm no. Tus naj npawb ntawm lub hauv paus square yog lub hauv paus naj npawb 1, lub hauv paus naj npawb 2, thiab lub hauv paus naj npawb 3. Nws yog ib qho yooj yim mus nrhiav tau, txoj cai? (Tus naj npawb ntawm 3 yog N19)
Lub square ntawm pi yog dab tsi? sib npaug 10. Nws puas yooj yim thaum lub siab bar ruaj khov? Lub torsion coefficient ntawm ib puag ncig pas nrig yog hais txog 0.1 * D^3, tam sim no koj tuaj yeem xam qhov torsion coefficient ntawm qhov ncauj, txoj cai?
Vim li cas cov ntsia hlau loj dhia ncaj qha los ntawm M36 mus rau M40?
Vim li cas qhov sib kis ntawm lub zog 6.3 lossis 7.1?
Vim li cas cov channel steel muaj qhov loj ntawm 12.6, uas tsis tshua pom hauv khw?
Yog vim li cas lub Hoobkas outsourcing hu thiab hais tias tsis muaj 140 square tube, tab sis muaj 120 thiab 160?
Vim tias R5 tus lej system muaj qhov tseem ceeb tshaj R20 tus lej system.
Vim li cas cov kev tsis sib haum xeeb ntawm cov txheej txheem muaj thawj ntu thiab ib ntu thib ob? Feem ntau hais lus, thawj ntu yog R5 ib ntus.
Vim li cas Inventor lub qhov taub hau muaj M11.2? Tam sim no koj paub tias nws tsis yog tus lej tsim, txoj cai?
Tseem muaj steel phaj thickness, seem steel hom, iav modulus, tag nrho cov qauv qhov chaw, functional tsis, dimensional parameters, standard kam rau ua rooj ntawm tag nrho cov khoom lag luam qauv, thiab hais txog. Lawv cov peev txheej tau maj mam ua kom pom tseeb hauv peb lub siab tam sim no. . Nws tuaj yeem hais tau tias peb tau nkag siab ib nrab ntawm cov qauv siv tshuab, nrog rau cov khoom lag luam uas tseem tsis tau ua.
Tom qab ntawd, thaum peb tsim cov khoom lag luam, peb tuaj yeem tsim cov khoom siv tib lub sijhawm, es tsis txhob ua cov khoom hu ua "standardization" tom qab tsim tiav; Ntxiv mus, yog tias cov khoom yog destined yuav tsum tau serialized, ces peb muaj peev xwm txawm sib piv cov kev ua hauj lwm tej yam kev mob Tsim cov khoom tsis paub nws zoo, vim hais tias qhov tseem ceeb tus naj npawb system tau suav nrog tag nrho cov qauv.
Cov ntawv thov ntawm tus lej tseem ceeb, uas tau teev tseg saum toj no, tuaj yeem piav qhia raws li kev poob hauv dej hiav txwv, thiab cov ntawv thov tsis kawg tab tom tos peb los txhim kho peb tus kheej. Nco txog tus lej tseem ceeb, nws yog ib txoj haujlwm ib zaug.
